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You searched for +publisher:"NSYSU" +contributor:("Dr. Chih-Pu Chang"). One record found.

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NSYSU

1. Hung, Liang-Jie. Influence of hot rolling microstructure on mechanical properties of fullyannealed 5052 aluminum alloy.

Degree: Master, Materials and Optoelectronic Science, 2012, NSYSU

The objective of this work is to investigate the influence of hot rolling process on the mechanical properties of AA 5052 aluminum alloy. Hot-rolled band fabricated by tandem mill (hot-band A) will be compared with that fabricated by reverse mill hot-band C). Optical microscopic observations revealed that hot-band A has a uniform microstructure throughout the thickness, while hot-band C exhibits non-uniform microstructure, fine grains near the surface and coarser grains in the center. Both hot-bands were subjected to cold-rolling and annealing to O-temper. Two annealing processes were used: (a) annealing in 500 °C salt bath, which may simulate the high heating rate of continuous annealing line (CAL), and (b) annealing in 320 °C conventional air furnace with heating rate of 30 °C/h, which may simulate the slow heating rate of batch-type annealing. In general, both materials annealed in 320 °C air furnace exhibit higher yield strength than those annealed in 500 °C salt bath do, however, both materials exhibit better tensile ductility after annealed in 500 °C salt bath as compared with those annealed in 320 °C air furnace.TEM examinations indicated that the cold-rolled sheet after annealing in 320 °C air furnace contains larger number of precipitates comparing with its 500 °C salt bath annealed counterpart. This observation may account for the higher yield strength of cold-rolled sheet annealed in 320 °C air furnace. After cold-rolling and annealing in 320 °C air furnace, the material C shows higher yield strength than the material A does. However, after annealing in 500 °C salt bath, both materials have similar yield strength. XRD pole-figure analysis indicated that hot-band A exhibited stronger texture than hot-band C did. The texture intensity for both materials decreased considerably after cold-rolling and annealing. Orientation image mapping (OIM) obtained by EBSD (electron backscattered diffraction) analysis indicated that the grain boundaries in both materials after cold-rolling and annealing were mainly high angle boundaries, and the 500 °C salt bath annealed specimens have more equiaxed grain shape as compared with the 320 °C air furnace annealed specimens. Advisors/Committee Members: Dr. Chih-Pu Chang (chair), Dr. Po-We Kao (committee member), Chung-Yi Yu (chair).

Subjects/Keywords: texture; aluminum alloy; annealing processes; yield strength; tensile ductility

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Hung, L. (2012). Influence of hot rolling microstructure on mechanical properties of fullyannealed 5052 aluminum alloy. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0724112-165735

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Hung, Liang-Jie. “Influence of hot rolling microstructure on mechanical properties of fullyannealed 5052 aluminum alloy.” 2012. Thesis, NSYSU. Accessed March 18, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0724112-165735.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Hung, Liang-Jie. “Influence of hot rolling microstructure on mechanical properties of fullyannealed 5052 aluminum alloy.” 2012. Web. 18 Mar 2019.

Vancouver:

Hung L. Influence of hot rolling microstructure on mechanical properties of fullyannealed 5052 aluminum alloy. [Internet] [Thesis]. NSYSU; 2012. [cited 2019 Mar 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0724112-165735.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hung L. Influence of hot rolling microstructure on mechanical properties of fullyannealed 5052 aluminum alloy. [Thesis]. NSYSU; 2012. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0724112-165735

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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